Tile Calculator

Cuts. Every wall edge, corner, doorway, and fixture requires cutting a tile, and the offcut usually can't be used elsewhere; some tiles also break during cutting or arrive damaged. 10% covers a normal rectangular room laid straight; diagonal layouts waste more because every perimeter tile is an angled cut; herringbone and patterns waste the most. Running out mid-job is worse than it sounds — see the dye lot problem.

Tiles are made in production batches, and color varies subtly between batches of the same product. Buy everything at once and it matches; buy a top-up box months later and it can read visibly different on the floor. Pros over-order slightly and keep the spare box — future repairs then come from your original lot instead of a lookalike.

Split it into rectangles, calculate each, and add the areas (an L-shaped kitchen is two rectangles). For angled or curved sections, use the bounding rectangle — over-measuring odd shapes is correct, since the cuts around them are exactly where waste concentrates. Subtract only large permanent footprints like a kitchen island; don't subtract vanities or appliances you might someday move.

By box — that's how stores sell, and each box states its coverage in square feet (commonly 10–15 depending on tile size). Enter that figure and the tool rounds boxes up for you. Tile count still matters for layout planning and for spotting when a size choice creates awkward slivers at walls: if the last row would be under half a tile wide, shifting the layout or the tile size looks dramatically better.